Donald Trump speaks at an airport hangar rally in Hagerstown, Maryland, Sunday, April 24, 2016, in front of his personal helicopter. The Maryland primary and four others are Tuesday. Reuters/Jim Bourg

It will be another key Tuesday in the race for the White House as Pennsylvania, Maryland, Connecticut, Delaware and Rhode Island all head to the polls in primary races.

After winning big in New York, businessman Donald Trump is hoping to pick up many more delegates as rival Republican candidates Texas Sen. Ted Cruz and Ohio Gov. John Kasich team up in a last-ditch bid to the front-runner ahead of the convention in July.

Trump holds a commanding 19-point lead in an average of Pennsylvania polls conducted by Real Clear Politics. A Public Policy Polling poll released Sunday found that Trump is headed for “blowout victories across the board.” With 71 delegates up for grabs in Pennsylvania, Trump has 51 percent support there, trailed by Cruz with 25 percent and Kasich, a western Pennsylvania native, with 22 percent. The poll surveyed 826 Republican primary voters in Pennsylvania between April 22 and 24 and had a 3.4 percentage point margin of error.

Coming off of a big win in New York last week, former Secretary of State Hillary Clinton on Tuesday can widen her lead over Vermont Sen. Bernie Sanders. Pennsylvania, with 210 Democratic delegates, and Maryland, with 118 delegates, are two states to watch closely Tuesday.

While Clinton holds a commanding 14-point lead over Sanders in an average of Pennsylvania polls conducted by Real Clear Politics, Tuesday’s races in Connecticut and Rhode Island will be more competitive.

In Connecticut, Clinton has 48 percent of voters' support compared with Sanders’ 46 percent. Clinton’s slight lead in Connecticut comes partly from the large margin of support from African-American voters, with 63 percent support for Clinton compared with 24 percent support for Sanders. In Rhode Island, Sanders leads with 49 percent support to Clinton’s 45 percent. The Public Policy Polling poll surveyed 709 likely Democratic primary voters with a 2.8 percentage point margin of error in Connecticut. In Rhode Island, 668 likely Democratic primary voters were surveyed with a 2.9 percentage point margin of error.

In Maryland, Clinton has the support of 57 percent of voters heading into the primary compared with Sanders’ 32 percent support, a Monmouth University poll found. The poll surveyed 300 likely Maryland Democratic voters from April 18 to 20 and had a margin of error of 5.7 percentage points.

“The demographics of Maryland’s Democratic electorate are similar to past primary states where Clinton has done very well,” said Patrick Murray, director of the Monmouth University Polling Institute, noting the large black population there.